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Known exploited vulnerability

CVE-2026-111793

mediumCVSS 3.1 4.3In CISA KEVEPSS 0.27%Published · Openwave Messaging (Ireland) Limited

The short answer

CVE-2026-111793 affects Openwave Messaging (Ireland) Limited Webtop Media Transcoder and is rated medium (CVSS 4.3). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-11-10: attackers are using it, so patch it first.

What it is

Openwave Webtop Media Transcoder does not enforce administrator-defined file type restrictions to restrict the file-types to be converted. This may allow an authenticated user to process and convert unintended document types if bypassing the Webmail experience.

Weakness: CWE-669.

Severity

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploited (CISA KEV)

Yes, since Nov 10, 2026

Federal due date Nov 24, 2026

EPSS, next 30 days

0.27%

Higher than 20% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

What CISA says to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…

Affected products

Webtop Media Transcoder. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2026-111793 being exploited?

Yes. CISA added CVE-2026-111793 to its Known Exploited Vulnerabilities catalog on 2026-11-10, with a federal remediation due date of 2026-11-24.

How do I fix CVE-2026-111793?

CISA's required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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